Clean up SVG files and update logos

- Removed unnecessary XML and DOCTYPE declarations from SVG files.
- Eliminated comments within SVG files for cleaner output.
- Trimmed leading and trailing whitespace from SVG content.
- Ensured all SVG files end with a newline character.
- Updated multiple logo SVG files including WireGuard, Wise, WOG, Yahoo, and others to conform to the new standards.
- Enhanced the update-data.js script to automate the cleanup process for SVG files.

public/images/flags/kn.svg

@@ -11,4 +11,4 @@
     <path fill="#000001" d="m-107.9 396.6.5 115.4 125.3-.2 611.7-410.1L629 1.4 505.2.2z"/>
     <path fill="#fff" d="m380.4 156.6-9.8-42.2 33.3 27 38-24.6-17.4 41.3 33.4 27-44.2-1.5-17.3 41.3-9.9-42.2-44.1-1.5zm-275.2 179-9.9-42.3 33.3 27 38-24.6-17.4 41.3 33.4 27-44.1-1.5-17.4 41.3-9.8-42.2-44.1-1.5z"/>
   </g>
-</svg>
+</svg>